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Monarchical presidential regimes in the Arab world looked as though they would last indefinitely—until events in Tunisia and Egypt made clear their time was up. This is the first book to lay bare the dynamics of a governmental system that largely defined the Arab Middle East in the twentieth century, and the popular opposition they engendered.

The emergence of memory, a trace of things past, into human consciousness is one of the greatest mysteries of the human mind. Whereas the neuronal basis of recognition memory can be probed experimentally in human and nonhuman primates, the study of free recall requires that the mind declare the occurrence of a recalled memory (an event intrinsic to the organism and invisible to an observer). Here, we report the activity of single neurons in the human hippocampus and surrounding areas when subjects first view cinematic episodes consisting of audiovisual sequences and again later when they freely recall these episodes. A subset of these neurons exhibited selective firing, which often persisted throughout and following specific episodes for as long as 12 seconds. Verbal reports of memories of these specific episodes at the time of free recall were preceded by selective reactivation of the same hippocampal and entorhinal cortex neurons. We suggest that this reactivation is an internally generated neuronal correlate for the subjective experience of spontaneous emergence of human recollection.

The Arab uprisings of 2011 are still unfolding, but we can already discern patterns of their effects on the Middle East region. This article offers a brief chronology of events, highlighting their inter-connections but also their very diverse origins, trajectories and outcomes. It discusses the economic and political grievances at the root of the uprisings and assesses the degree to which widespread popular mobilization can be attributed to pre-existing political, labour and civil society activism, and social media. It argues that the uprisings' success in overthrowing incumbent regimes depended on the latter's responses and relationships with the army and security services. The rebellions' inclusiveness or lack thereof was also a crucial factor. The article discusses the prospects of democracy in the Arab world following the 2011 events and finds that they are very mixed: while Tunisia, at one end, is on track to achieve positive pohtical reform, Syria, Yemen and Libya are experiencing profound internal division and conflict. In Bahrain the uprising was repressed. In Egypt, which epitomizes many regional trends, change will be limited but, for that reason, possibly more long-lasting. Islamist movements did not lead the uprisings but will benefit from them politically even though, in the long run, political participation may lead to their decline. Finally, the article sketches the varied and ongoing geopolitical implications of the uprisings for Turkish, Iranian and Israeli interests and policies. It assesses Barack Obama's response to the 2011 events and suggests that, despite their profound significance for the politics of the region, they may not alter the main contours of US foreign policy in the Middle East in a major way.

This article helps explain the variation in political turmoil observed in the MENA during the Arab Spring. The region’s monarchies have been largely spared of violence while the “republics” have not. A theory about how a monarchy’s political culture solves a ruler’s credible commitment problem explains why this has been the case. Using a panel dataset of the MENA countries (1950–2006), I show that monarchs are less likely than nonmonarchs to experience political instability, a result that holds across several measures. They are also more likely to respect the rule of law and property rights and grow their economies. Through the use of an instrumental variable that proxies for a legacy of tribalism, the time that has elapsed since the Neolithic Revolution weighted by Land Quality, I show that this result runs from monarchy to political stability. The results are also robust to alternative political explanations and country fixed effects.

Signals produced in leaves are transported to the shoot apex where they cause flowering. Protein of the gene FLOWERING LOCUS T (FT) is probably a long day (LD) signal in Arabidopsis. In the companion paper, rapid LD increases in FT expression associated with flowering driven photosynthetically in red light were documented. In a far red (FR)-rich LD, along with FT there was a potential role for gibberellin (GA). Here, with the GA biosynthesis dwarf mutant ga1-3, GA4-treated plants flowered after 26 d in short days (SD) but untreated plants were still vegetative after 6 months. Not only was FT expression low in SD but applied GA bypassed some of the block to flowering in ft-1. On transfer to LD, ga1-3 only flowered when treated simultaneously with GA, and FT expression increased rapidly (<19.5 h) and dramatically (15-fold). In contrast, in the wild type in LD there was little requirement for GA for FT increase and flowering so its endogenous GA content was near to saturating. Despite this permissive role for endogenous GA in Columbia, RNA interference (RNAi) silencing of the GA biosynthesis gene, GA 20-OXIDASE2, revealed an additional, direct role for GA in LD. Flowering took twice as long after silencing the LD-regulated gene, GA 20-OXIDASE2. Such independent LD input by FT and GA reflects their non-sympatric expression (FT in the leaf blade and GA 20-OXIDASE2 in the petiole). Overall, FT acts as the main LD floral signal in Columbia and GA acts on flowering both via and independently of FT.

During 2011/12, East Bank tribal youths in Jordan mobilized a new wave of political opposition through the Hirak movement. Reflecting generational change in their communities, as well as the historical erosion of tribal-state relations, these protest groups demanded sweeping democratic reforms from the monarchy. They also utilized language and methods more radical than the established legal opposition. This changing dynamic of tribal politics holds enormous implications for politics and stability within the Hashemite kingdom.

This article analyzes the Israeli position toward the Arab Peace Initiative (API), which was adopted by the 2002 Arab League Summit in Beirut. The API has been the most dramatic and progressive Arab initiative ever presented to Israel, and has remained on the negotiating table ever since it was first proposed. Unwilling to recognize the magnitude of the change in the Arab position, succeeding Israeli governments have never officially responded to the initiative for various reasons. The main argument of the article is that by constantly evading the API, Israel has missed a genuine opportunity to advance the peace process.

Arabidopsis flowers in long day (LD) in response to signals transported from the photoinduced leaf to the shoot apex. These LD signals may include protein of the gene FLOWERING LOCUS T (FT) while in short day (SD) with its slower flowering, signalling may involve sucrose and gibberellin. Here, it is shown that after 5 weeks growth in SD, a single LD up-regulated leaf blade expression of FT and CONSTANS (CO) within 4-8 h, and flowers were visible within 2-3 weeks. Plants kept in SDs were still vegetative 7 weeks later. This LD response was blocked in ft-1 and a co mutant. Exposure to different LD light intensities and spectral qualities showed that two LD photoresponses are important for up-regulation of FT and for flowering. Phytochrome is effective at a low intensity from far-red (FR)-rich incandescent lamps. Independently, photosynthesis is active in an LD at a high intensity from red (R)-rich fluorescent lamps. The photosynthetic role of a single high light LD is demonstrated here by the blocking of the flowering and FT increase on removal of atmospheric CO₂ or by decreasing the LD light intensity by 10-fold. These conditions also reduced leaf blade sucrose content and photosynthetic gene expression. An SD light integral matching that in a single LD was not effective for flowering, although there was reasonable FT-independent flowering after 12 SD at high light. While a single photosynthetic LD strongly amplified FT expression, the ability to respond to the LD required an additional but unidentified photoresponse. The implications of these findings for studies with mutants and for flowering in natural conditions are discussed.